Preparation of grout for stabilization of abandoned in-situ oil shale retorts. [Patent application]
Abstract
A process is described for the preparation of grout from burned shale by treating the burned shale in steam at approximately 700/sup 0/C to maximize the production of the materials alite and larnite. Oil shale removed to the surface during the preparation of an in-situ retort is first retorted on the surface and then the carbon is burned off, leaving burned shale. The burned shale is treated in steam at approximately 700/sup 0/C for about 70 minutes. The treated shale is then ground and mixed with water to produce a grout which is pumped into an abandoned, processed in-situ retort, flowing into the void spaces and then bonding up to form a rigid, solidified mass which prevents surface subsidence and leaching of the spent shale by ground water.
- Inventors:
- Issue Date:
- OSTI Identifier:
- 6891094
- Assignee:
- Dept. of Energy
- DOE Contract Number:
- W-7405-ENG-48
- Resource Type:
- Patent
- Country of Publication:
- United States
- Language:
- English
- Subject:
- 04 OIL SHALES AND TAR SANDS; IN-SITU RETORTING; GROUTING; STABILIZATION; SPENT SHALES; WASTE PRODUCT UTILIZATION; RETORTS; CHEMICAL REACTIONS; CHEMICAL REACTORS; DECOMPOSITION; DISTILLATION EQUIPMENT; EQUIPMENT; IN-SITU PROCESSING; PROCESSING; RETORTING; 040900* - Oil Shales & Tar Sands- Waste management
Citation Formats
Mallon, R G. Preparation of grout for stabilization of abandoned in-situ oil shale retorts. [Patent application]. United States: N. p., 1979.
Web.
Mallon, R G. Preparation of grout for stabilization of abandoned in-situ oil shale retorts. [Patent application]. United States.
Mallon, R G. Fri .
"Preparation of grout for stabilization of abandoned in-situ oil shale retorts. [Patent application]". United States.
@article{osti_6891094,
title = {Preparation of grout for stabilization of abandoned in-situ oil shale retorts. [Patent application]},
author = {Mallon, R G},
abstractNote = {A process is described for the preparation of grout from burned shale by treating the burned shale in steam at approximately 700/sup 0/C to maximize the production of the materials alite and larnite. Oil shale removed to the surface during the preparation of an in-situ retort is first retorted on the surface and then the carbon is burned off, leaving burned shale. The burned shale is treated in steam at approximately 700/sup 0/C for about 70 minutes. The treated shale is then ground and mixed with water to produce a grout which is pumped into an abandoned, processed in-situ retort, flowing into the void spaces and then bonding up to form a rigid, solidified mass which prevents surface subsidence and leaching of the spent shale by ground water.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Fri Dec 07 00:00:00 EST 1979},
month = {Fri Dec 07 00:00:00 EST 1979}
}